improve viewer pending states

apps/client/src/common/components/state/Empty.module.scss

@@ -1,20 +1,43 @@
+@use '@/theme/viewerDefs' as *;
+
 .emptyContainer {
   width: 100%;
   text-align: center;
-  color: $white-10;
+  color: var(--secondary-color-override, $viewer-secondary-color);
 
   .empty {
     display: block;
-    width: min(100%, 24rem);
-    margin-inline: auto;
-    opacity: 0.8;
+    width: min(100%, 14rem);
+    margin: 0 auto -1.5rem;
+    opacity: 0.6;
   }
 
   .text {
     display: block;
     margin-inline: auto;
-    font-weight: 600;
-    font-size: 2em;
-    max-width: min(100%, 600px);
+    font-weight: 400;
+    font-size: clamp(1rem, 1.55vw, 1.5rem);
+    line-height: 1.35;
+    max-width: min(100%, 40rem);
+  }
+
+  &.error {
+    color: $error-red;
+
+    .empty {
+      opacity: 0.35;
+      filter: grayscale(1);
+    }
+
+    .text {
+      margin-top: 0.5rem;
+    }
+  }
+
+  .errorIcon {
+    display: block;
+    width: 1.5rem;
+    height: 1.5rem;
+    margin: -0.125rem auto 0;
   }
 }

apps/client/src/common/components/state/Empty.tsx

@@ -1,4 +1,5 @@
 import { CSSProperties } from 'react';
+import { IoWarningOutline } from 'react-icons/io5';
 
 import EmptyImage from '../../../assets/images/empty.svg?react';
 import { cx } from '../../utils/styleUtils';
@@ -9,12 +10,18 @@ interface EmptyProps {
   text?: string;
   injectedStyles?: CSSProperties;
   className?: string;
+  variant?: 'error';
 }
 
-export default function Empty({ text, className, injectedStyles }: EmptyProps) {
+export default function Empty({ text, className, injectedStyles, variant }: EmptyProps) {
   return (
-    <div className={cx([style.emptyContainer, className])} style={injectedStyles}>
+    <div
+      className={cx([style.emptyContainer, variant === 'error' && style.error, className])}
+      style={injectedStyles}
+      role={variant === 'error' ? 'alert' : undefined}
+    >
       <EmptyImage className={style.empty} />
+      {variant === 'error' && <IoWarningOutline className={style.errorIcon} aria-hidden />}
       {text && <span className={style.text}>{text}</span>}
     </div>
   );

apps/client/src/common/components/state/EmptyFill.module.scss

@@ -0,0 +1,11 @@
+.fill {
+  box-sizing: border-box;
+  width: 100%;
+  height: 100%;
+  min-height: 0;
+  flex: 1;
+
+  display: grid;
+  place-items: start center;
+  padding: clamp(4rem, 20dvh, 12rem) 1.5rem 1rem;
+}

apps/client/src/common/components/state/EmptyFill.tsx

@@ -0,0 +1,19 @@
+import { cx } from '../../utils/styleUtils';
+import Empty from './Empty';
+
+import style from './EmptyFill.module.scss';
+
+interface EmptyFillProps {
+  text?: string;
+  /** placed on the fill wrapper — e.g. to assign a grid-area in a grid parent */
+  className?: string;
+}
+
+/** Container-filling empty/loading state for panels and grid/flex cells. */
+export default function EmptyFill({ text, className }: EmptyFillProps) {
+  return (
+    <div className={cx([style.fill, className])}>
+      <Empty text={text} />
+    </div>
+  );
+}

apps/client/src/common/components/state/EmptyPage.module.scss

@@ -6,7 +6,7 @@
   box-sizing: border-box; /* reset */
   overflow: hidden;
   width: 100%; /* restrict the page width to viewport */
-  height: 100vh;
+  height: 100dvh;
 
   font-family: var(--font-family-override, $viewer-font-family);
   background: var(--background-color-override, $viewer-background-color);
@@ -16,5 +16,6 @@
   display: flex;
   flex-direction: column;
   align-items: center;
-  padding-top: 5rem;
+  justify-content: center;
+  padding-block: 5rem;
 }

apps/client/src/common/components/state/EmptyPage.tsx

@@ -7,12 +7,13 @@ import style from './EmptyPage.module.scss';
 interface EmptyPageProps {
   text?: string;
   injectedStyles?: CSSProperties;
+  variant?: 'error';
 }
 
-export default function EmptyPage({ text, injectedStyles }: EmptyPageProps) {
+export default function EmptyPage({ text, injectedStyles, variant }: EmptyPageProps) {
   return (
     <div className={style.page}>
-      <Empty text={text} injectedStyles={injectedStyles} />
+      <Empty text={text} injectedStyles={injectedStyles} variant={variant} />
     </div>
   );
 }

apps/client/src/common/components/state/EmptyTableBody.module.scss

@@ -15,9 +15,4 @@
     gap: 1rem;
     margin-top: 1em;
   }
-
-  .text {
-    font-weight: 600;
-    font-size: 2em;
-  }
 }

apps/client/src/common/components/state/EmptyTableBody.tsx

@@ -18,8 +18,7 @@ export default function EmptyTableBody({ handleAddNew }: EmptyTableBodyProps) {
     <tbody className={style.emptyContainer}>
       <tr>
         <td colSpan={99} className={style.emptyCell}>
-          <Empty injectedStyles={{ marginTop: '5vh' }} />
-          <span className={style.text}>{text}</span>
+          <Empty text={text} injectedStyles={{ marginTop: '5vh' }} />
           {handleAddNew && (
             <div className={style.inline}>
               <Button onClick={() => handleAddNew(SupportedEntry.Event)} variant='primary' size='large'>